Procedura per la configurazione di un tunnel Anycast con i router di bordo della rete ninux.org di Roma ai fini di distribuire gli indirizzi pubblici nella rete, senza l'uso di policy routing. Chiedere su contatti [AT] ninux [DOT] org l'assegnazione di un indirizzo pubblico <assigned pub ip>
Client side olsr.conf (on nearest olsr node):
#olsr.conf ... Hna <assigned pub ip> 255.255.255.255 ...
client script:
greifname=$1 local_ip=$2 pub_ip=$3 remote_ip=10.0.162.1 ip tunnel add $greifname mode gre remote $remote_ip local $local_ip ttl 255 ip link set $greifname up ip addr add $pub_ip dev $greifname ip rule add from $pub_ip table 115 ip route add default dev $greifname table 115
usage example: tunnel_gre.sh ninuxpub <priv_ipv4> <assigned pub ip>/32
Server side (ON BORDER ROUTER ONLY)
In the olsr.conf file make sure you are announcing the anycast address
#olsr.conf ... Hna 10.0.162.1 255.255.255.255 ...
Server site bash script:
greifname=$1 ip addr add 10.0.162.1/32 dev lo ip tunnel add $greifname mode gre local 10.0.162.1 ttl 255 ip link set $greifname up
tunnel script: example: ./bgpsidescript.sh ninuxpub
Video
http://wiki.ninux.org/SkillSharing2015/Ninux_BGP_GRE_Anycast https://archive.org/details/Ninux.BGP.GRE.Anycast.by.Nino.parziale.20150312.ninux.org https://vimeo.com/141252767 https://vimeo.com/141252766